| Utukok River | |
| Map Size: | 300 |
| Pushpin Map: | USA Alaska |
| Pushpin Map Size: | 300 |
| Pushpin Map Caption: | Location of the mouth of the Utukok River in Alaska |
| Subdivision Type1: | Country |
| Subdivision Name1: | United States |
| Subdivision Type2: | State |
| Subdivision Name2: | Alaska |
| Subdivision Type4: | Borough |
| Subdivision Name4: | North Slope |
| Length: | 225miles[1] |
| Source1: | Confluence of Kogruk and Tupik creeks |
| Source1 Location: | De Long Mountains, Brooks Range, National Petroleum Reserve - Alaska |
| Source1 Coordinates: | 68.5572°N -161.1056°W |
| Source1 Elevation: | 2075feet[2] |
| Mouth: | Kasegaluk Lagoon, Chukchi Sea, Arctic Ocean |
| Mouth Location: | 20miles southwest of Icy Cape |
| Mouth Coordinates: | 70.0469°N -162.4572°W[3] |
| Mouth Elevation: | 0feet |
The Utukok River (Iñupiaq: Utuqqaq) is a 225miles long stream in the North Slope Borough of the U.S. state of Alaska.[1] It rises in the De Long Mountains at the confluence of Kogruk and Tupik creeks and flows north, northeast, and then northwest.[3] It empties into Kasegaluk Lagoon on the Chukchi Sea of the Arctic Ocean, 20miles southwest of Icy Cape.[3] It is the breeding ground for Arctic caribou and various birds.[4]
Utuqqaq, meaning old or ancient, is the Inuit name for Icy Cape.[3] Variant names used for the river in the 19th century included "Utukak" and "Ootokok".[3]